The OPPO K9 Pro was announced in 2021, September 26 With 6.43 inches, 99.8 cm2 (~85.6% screen-to-body ratio) AMOLED, 120Hz, HDR10, 430 nits (typ), 800 nits (peak), Powered by MediaTek MT6893 Dimensity 1200 (6 nm) and running Android 11, ColorOS 11.3, the device delivered smooth performance and multitasking capabilities. while the Li-Po 4500 mAh, non-removable ensured long-lasting usage.